diff options
Diffstat (limited to 'lib/msun/amd64/fenv.c')
| -rw-r--r-- | lib/msun/amd64/fenv.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/lib/msun/amd64/fenv.c b/lib/msun/amd64/fenv.c index dd21dad..95c82de 100644 --- a/lib/msun/amd64/fenv.c +++ b/lib/msun/amd64/fenv.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2004 David Schultz <das@FreeBSD.ORG> + * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -113,19 +113,36 @@ feupdateenv(const fenv_t *envp) } int -__fesetmask(int mask) +__feenableexcept(int mask) { int mxcsr, control, omask; + mask &= FE_ALL_EXCEPT; __fnstcw(&control); __stmxcsr(&mxcsr); omask = (control | mxcsr >> _SSE_EMASK_SHIFT) & FE_ALL_EXCEPT; - control = (control | FE_ALL_EXCEPT) & ~mask; + control &= ~mask; __fldcw(control); - mxcsr |= FE_ALL_EXCEPT << _SSE_EMASK_SHIFT; mxcsr &= ~(mask << _SSE_EMASK_SHIFT); __ldmxcsr(mxcsr); return (~omask); } -__weak_reference(__fesetmask, fesetmask); +int +__fedisableexcept(int mask) +{ + int mxcsr, control, omask; + + mask &= FE_ALL_EXCEPT; + __fnstcw(&control); + __stmxcsr(&mxcsr); + omask = (control | mxcsr >> _SSE_EMASK_SHIFT) & FE_ALL_EXCEPT; + control |= mask; + __fldcw(control); + mxcsr |= mask << _SSE_EMASK_SHIFT; + __ldmxcsr(mxcsr); + return (~omask); +} + +__weak_reference(__feenableexcept, feenableexcept); +__weak_reference(__fedisableexcept, fedisableexcept); |
